10r-8-12=

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Solution for 10r-8-12= equation:


Simplifying
10r + -8 + -12 = 0

Reorder the terms:
-8 + -12 + 10r = 0

Combine like terms: -8 + -12 = -20
-20 + 10r = 0

Solving
-20 + 10r = 0

Solving for variable 'r'.

Move all terms containing r to the left, all other terms to the right.

Add '20' to each side of the equation.
-20 + 20 + 10r = 0 + 20

Combine like terms: -20 + 20 = 0
0 + 10r = 0 + 20
10r = 0 + 20

Combine like terms: 0 + 20 = 20
10r = 20

Divide each side by '10'.
r = 2

Simplifying
r = 2

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